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Best powder for accurate .308 load.

Discussion in 'Handloading and Reloading' started by C-grunt, Feb 7, 2007.

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  1. C-grunt

    C-grunt Member

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    Im loading rounds for target shooting with my Savage 10FP and would like your advise on which powder I should use. Im currently loading Federal Gold medal cases with 38.5grns of Hodgon Benchmark and 168grn SMKs. This is the most accurate load Ive tried but Im not getting the accuracy I want. Should I try a different powder or continue experimenting with this load?
     
  2. ocabj

    ocabj Member

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    Popular powders for .308 are:

    Hodgdon Varget, Alliant Reloder 15 (RL15), Ramshot TAC, Winchester 748.
     
  3. Grumulkin

    Grumulkin Member

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    In the 308, I've tried Win. 748, Win. 760 and IMR 4064 all with good results. Win. 760 should not be used with semiautos. My best results have been with IMR 4064, Federal 210M primers and Sierra 168 gr. BTHP match bullets.
     
  4. scrat

    scrat Member

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    winchester 748 cci 200 primers


    good shieeeeeet
     
  5. db_tanker

    db_tanker Member

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    AA 2520, 748, RL-15, IMR4895
     
  6. Bullet

    Bullet Member

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    You might try RE-15 for the 168 gr SMK’s.
     
  7. taliv

    taliv Moderator

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    i've been VERY happy with r15
     
  8. alucard0822

    alucard0822 Member

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    I also have a 10fp with the choate sock, shooting off of a bipod the best I have found so far is either 45gr of varget under a 175gr MK or 45.5gr under a 168gr hornandy hpbt match bullet I use cci LRbr primers for both loads and get around an inch consistently at 200yds with 10 shot groups, OAL is best set with a gauge .005 off of the lands
     
  9. tbtrout

    tbtrout Member

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    I use LC brass w/ Federal match primers, 40gr of IMR4895 under a 168SMK and I get sub 1/2 moa. IMR4064 is also a good choice.
     
  10. SUBMOAS

    SUBMOAS Member

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    Continue with what you have.

    Okay, once you have the powder that you want to work with, it's time for you to play with the O.A.L.
    Find how much jump you have from the bullet to the lands(lead). You DO NOT want to set the bullet on the lands. Back off and work .003-.015 off the lands. You will find out that this can change your accuracy a lot.
    Also remember to next size your cases once they are fired formed to your chamber.
    Get yourseld a Stoney Point Case O.A.L. guage.
    Good Luck.....
    My .02............
     
  11. ocabj

    ocabj Member

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    In my experience with Sierra Match Kings, seating depth does not play a huge role in accuracy. If you have a solid load using the standard overall length, accuracy will not be increased significantly by adjusting seating depth.

    The bullets where seating depth is a very significant concern will be any VLD (very low drag) style bullet such as the Hornady A-Max and Berger VLDs.

    When loading .308 using Sierra Match Kings, I would focus all attention on finding the correct powder, powder charge weight, and primer combination. Once that is worked out, then you can concern yourself in fine tuning a load based on seating depth.
     
  12. cheygriz

    cheygriz Member

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    Several national championships have been with 308s using H335. It's a great powder, and it is also a spherical, so you don't have the PITA of messing with extruded powders.:)
     
  13. SUBMOAS

    SUBMOAS Member

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    Seating depth does not play a huge role in accuracy???

    He might be right... Depends on what your definition of an accurate rifle is.
    2"@100 Yards is accurate
    1"@100 Yards is very accurate
    .5" @100 Yards is very, very accurate
    .25" @100 Yards is Great Rifle, great reloading, great shooter and great skill.

    Pictures are how O.A.L can work.....
    If picture don't come through try this.
    http://pg.photos.yahoo.com/ph/stolie3000/album?.dir=/5146re2
     
  14. SILENTSOUL308

    SILENTSOUL308 Member

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    44.8g WINCHESTER 748, 168g SMK'S! Thats my favorite, worked great in my LTR!!!
     
  15. rbernie
    • Contributing Member

    rbernie Member

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    RE15 and Varget are my two favorites. Right now, I'm using mostly Varget. I have no metering issues with it, it's accurate, and it's relatively economical.
     
  16. ATAShooter

    ATAShooter Member

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    +1 RE-15
     
  17. ocabj

    ocabj Member

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    Let me quantify what I meant by significant. I doubt you will get more than a 1/4MOA difference or better by adjusting seating depth with a Sierra Match King. Honestly, I doubt you'll get even a 1/4MOA difference by adjusting seating depth. If you do, then I think the base load needs to be adjusted.

    Sierra Match Kings can handle jump very well. If they didn't, we wouldn't be using 77gr Sierra Match Kings in High Power loaded to magazine length in Wylde chambers.
     
  18. Charles S

    Charles S Member

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    That load also worked very well for me at 100, 200, 500, and 800 yards, not so well after that.

    For 1000 yards in the 308 the best load I put together was the Sierra 155 gr Sierra match load with IMR 4064, Federal 210M primers in Winchester brass.

    However, I never won 1000 yard match so take it for what it is worth. I did occasionally place and eventually got to around 8 inch groups though.
     
  19. BsChoy

    BsChoy Member

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    My PSS shoots one hole at 100 with almost max charge of varget and a 168 amax moly...re-15 is really good as well in that weight
     
  20. Dave R

    Dave R Member

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    Have they all been recommended at least once, now?

    H335 for me.
     
  21. win308

    win308 Member

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    Try a Sierra 155 grain MK. You may not have enough twist for the 168 MK.

    For less then full speed ahead loads, try H322. For accurate full bore loads, I always use H4895.
     
    Last edited: Feb 9, 2007
  22. C-grunt

    C-grunt Member

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    Thanks for the replies, I have been very busy the last week and haven't been able to read them. Im loading them to a OAL of 2.77 inches right now. Is that a good length or to long/short? Im still new to reloading.
     
  23. SUBMOAS

    SUBMOAS Member

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  24. 30Cal

    30Cal Member

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    2.77 is very short. Find where the lands are.

    1. Seat a bullet at 2.84" and push it with your thumb into the chamber.
    2. If it doesn't fall out of the chamber on it's own, then it's in the rifling. Seat the bullet deaper by 0.005" and repeat
    3. When it falls out of the chamber from gravity alone, you know where the lands are.

    I have a very tight chamber on my M1A and at 2.81", a 155, 168gr or 175gr Sierra is about 0.010" shy of the lands. On the previous barrel, that OAL would be 2.835"

    An AMax bullet I currently seat out to 2.845".

    I have seen some appreciable difference in accuracy with seating depth, but only in extreme cases (very short or very long bullets).
     
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